SendDatagramToBadAddress.java revision 6073:cea72c2bf071
1/* 2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * 27 * @bug 4204320 28 * 29 * @summary DatagramSocket.send should throw exception when connected 30 * to an invalid destination (on platforms that support it). 31 */ 32 33import java.net.*; 34import java.util.*; 35import java.io.InterruptedIOException; 36 37public class SendDatagramToBadAddress { 38 39 static boolean debug = false; 40 41 public static boolean OSsupportsFeature () { 42 Properties p = System.getProperties (); 43 String v; 44 if (p.getProperty ("os.name").equals ("Windows 2000")) 45 return (true); 46 if (p.getProperty ("os.name").equals ("Linux")) 47 return (true); 48 if (p.getProperty ("os.name").startsWith ("Mac OS")) 49 return (true); 50 // Check for specific Solaris version from here 51 v = p.getProperty ("os.arch"); 52 if (!v.equalsIgnoreCase ("sparc")) 53 return (false); 54 v = p.getProperty ("os.name"); 55 if (!v.equalsIgnoreCase ("Solaris") && !v.equalsIgnoreCase ("SunOS")) 56 return (false); 57 v = p.getProperty ("os.version"); 58 if (v.equals ("5.8") || v.equals ("8")) 59 return (false); 60 return (true); 61 } 62 63 static void print (String s) { 64 if (debug) 65 System.out.println (s); 66 } 67 68 class Server { 69 70 DatagramSocket server; 71 byte[] buf = new byte [128]; 72 DatagramPacket pack = new DatagramPacket (buf, buf.length); 73 74 public Server (DatagramSocket s) { 75 server = s; 76 } 77 78 public void receive (int loop, boolean expectError) throws Exception { 79 for (int i=0; i<loop; i++) { 80 try { 81 server.receive (pack); 82 } catch (Exception e) { 83 if (expectError) { 84 print ("Got expected error: " + e); 85 continue; 86 } else { 87 print ("Got: " + new String (pack.getData())); 88 print ("Expected: " + new String (buf)); 89 throw new Exception ("Error reading data: Iter " +i); 90 } 91 } 92 String s1 = "Hello, server"+i; 93 byte[] buf = s1.getBytes(); 94 if (!s1.equals (new String (pack.getData(), 95 pack.getOffset(),pack.getLength()))) { 96 print ("Got: " + new String (pack.getData())); 97 print ("Expected: " + new String (buf)); 98 throw new Exception ("Error comparing data: Iter " +i); 99 } 100 } 101 } 102 }; 103 104 public static void main (String args[]) throws Exception { 105 if (args.length >=1 && args[0].equals ("-d")) { 106 debug = true; 107 } 108 SendDatagramToBadAddress ud = new SendDatagramToBadAddress (); 109 ud.run (); 110 } 111 112 public void run() throws Exception { 113 114 if (OSsupportsFeature()) { 115 print ("running on OS that supports ICMP port unreachable"); 116 } 117 String host = "127.0.0.1"; 118 InetAddress addr = InetAddress.getByName(host); 119 DatagramSocket sock = new DatagramSocket(); 120 DatagramSocket serversock = new DatagramSocket(0); 121 DatagramPacket p; 122 byte[] buf; 123 int port = serversock.getLocalPort (); 124 final int loop = 5; 125 Server s = new Server (serversock); 126 int i; 127 128 print ("Checking send to connected address ..."); 129 sock.connect(addr, port); 130 131 for (i = 0; i < loop; i++) { 132 try { 133 buf = ("Hello, server"+i).getBytes(); 134 if (i % 2 == 1) 135 p = new DatagramPacket(buf, buf.length, addr, port); 136 else 137 p = new DatagramPacket(buf, buf.length); 138 sock.send(p); 139 } catch (Exception ex) { 140 print ("Got unexpected exception: " + ex); 141 throw new Exception ("Error sending data: "); 142 } 143 } 144 145 s.receive (loop, false); 146 147 // check disconnect() works 148 149 print ("Checking send to non-connected address ..."); 150 sock.disconnect (); 151 buf = ("Hello, server"+0).getBytes(); 152 p = new DatagramPacket(buf, buf.length, addr, port); 153 sock.send (p); 154 s.receive (1, false); 155 156 // check send() to invalid destination followed by a blocking receive 157 // returns an error 158 159 print ("Checking send to invalid address ..."); 160 sock.connect(addr, port); 161 serversock.close (); 162 try { 163 sock.setSoTimeout (4000); 164 } catch (Exception e) { 165 print ("could not set timeout"); 166 throw e; 167 } 168 169 boolean goterror = false; 170 171 for (i = 0; i < loop; i++) { 172 try { 173 buf = ("Hello, server"+i).getBytes(); 174 p = new DatagramPacket(buf, buf.length, addr, port); 175 sock.send(p); 176 p = new DatagramPacket(buf, buf.length, addr, port); 177 sock.receive (p); 178 } catch (InterruptedIOException ex) { 179 print ("socket timeout"); 180 } catch (Exception ex) { 181 print ("Got expected exception: " + ex); 182 goterror = true; 183 } 184 } 185 186 if (!goterror && OSsupportsFeature ()) { 187 print ("Didnt get expected exception: "); 188 throw new Exception ("send did not return expected error"); 189 } 190 } 191} 192